On Wed, 8 Jun 2005, Poul-Henning Kamp wrote: > > I just tried updating to -current and found that suspend/resume > on my T41p was broken (again). > Just about every acpi feature is broken on my T42p. I've tracked it down to writing to IO port 178, which we do on reset, suspend/resume, and switching to an external monitor. This port comes from "AcpiGbl_FADT->SmiCmd" which I believe the hardware tells us about. However, I see no successful writes to this port without hanging the machine. Also, suspiciously, acpi uses many other ports, none of which have a value close to 178. Most are near 4096. Does anyone know how to debug this further? > I hacked up a laserprinter as console and the last thing I see > is: > > [...] > vga0: saving 68 bytes of video state > pci0:29:7: Transition from D0 to D3 > ======= acpi_printcpu() debug dump ======== > gdt [0097:c0769280] idt [07ff:c0769660] ldt [0050] tr [0048] efl[00080082] > eax [00000001] ebx [c1a72180] ecx [00000001] edx [00000004] > esi [00000000] edi [00000003] ebp [d4447bf4] esp[d4447bd8] > cr0 [8005003b] cr2 [08069080] cr3 [00c1e000] cr4[00000691] > cs[0020] ds[0028] es[0028] fs[0008] gs[003b] ss[0028] > > I belive this comes from the suspend side. The next thing I have > is the copyright message from the subsequent reboot. > > -- > Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 > phk_at_FreeBSD.ORG | TCP/IP since RFC 956 > FreeBSD committer | BSD since 4.3-tahoe > Never attribute to malice what can adequately be explained by incompetence. > _______________________________________________ > freebsd-current_at_freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe_at_freebsd.org" >Received on Wed Jun 08 2005 - 12:00:06 UTC
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